CERTIFICATE OF APPROVED REGISTRATION J. T. BAKER CHEMICAL COMPANY. Sanitary Landfill. Harmony Township. Warren 2110B

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1 State of New Jersey SOLID WASTE ADMINISTRATION BEATRICE S. TYLUTKI CERTIFICATE OF APPROVED REGISTRATION Under the provisions of N.J.S.A. 13:lE n as the Solid Waste Management Act, this registration is J. T. BAKER CHEMICAL COMPANY Sanitary Landfill Harmony Township Warren 2110B Department of Environmental Protection. to fill or alter., or allow to be filled or altered, in any way, lands that are deemed to be Riparian, Wetlands, stream acquiring the necessary grants, permits or approvals from the Department of Environmental Protection. August 17, 1978 Solid Waste Administra Certificate of Approved Registration and Engineering Design Approval for J.T. Baker Chemical Company

2 Page 2 of 7 Pages - J.T. Baker Chemical Company Sanitary Landfill This Certificate of Approved Registration and Engineering Design Approval is conditioned upon the compliance and implementation of the following: 1. Permitted Waste Types Only those wastes generated by the J.T. Baker Chemical Company Phillipsburg Plant and of the following, types shall be accepted at this facility: I.D. WASTE 77 Liquid Chemical Waste (sludge from the waste water treatment Plant only) 2. Prohibited Waste Types The following materials, liquid or solid, shall not be disposed of at this facility: I.D. WASTE 10 Municipal 12 Dry Sewage Sludge 13 Bulky Waste 17 Dry Hazardous Waste 18 Dry Non-Hazardous Chemical Waste 23 Vegetative Waste 25 Animal and Food Processing Wastes 26 Oil Spill Clean-Up Wastes 27 Non-Chemical Industrial Waste 28 Infectious Waste 70 Waste Oil & Sludges 72 Bulk Liquid & Semi-Liquids 73 Septic Tank Clean-Out Wastes 74 Liquid Sewage Sludge 76 Liquid Hazardous Waste 77 Liquid Chemical Waste (other than waste water treatment plant sludges) 3. Groundwater Monitoring Groundwater from each of the three (3) existing "rock well" groundwater monitoring wells shown on drawing number 1 of the referenced engineering plans shall be sampled quarterly and analyzed by a New Jersey recognized laboratory. The monitoring shall be in accordance with N.J.A.C. 7: of the Rules of the Solid Waste Administration. In addition, two (2) new wells shall be installed at this facility: one new "rock well", to be constructed to the same specifications as for the existing three wells, and one "sand well", to be constructed in

3 Page 3 of 7 Pages - J.T. Baker Chemical Company Sanitary Landfill accordance with the attached specifications. These wells shall be installed within sixty (60) days from the date of this Certificate and shall be located as follows: 3. Groundwater Monitoring (continued) Well #4: On the west side of River Road (opposite the landfill), opposite existing Well #1, and approximately thirty (30) feet back from River Road. This well shall be of the "rock well" type. Well #5: Near (within 50 feet or less) Well #4, and also approximately thirty (30) feet west of River Road. This well shall be of the "sand well" type. 4. Operational Plan and Site Preparation The operational plan and site preparation shall be in accordance with the referenced operating procedures manual and drawings numbered 1 and 2 of the referenced engineering plans. Ten (10) existing unlined pits, numbered 8 through 17 on said plans, shall be closed out and replaced by four (4) new double-lined pits, numbered 17 through 20 on said plans. Four (4) of the ten pits to be closed out shall have all the sludge previously disposed in them disinterred and transferred to one of the double-lined pits. The other six-(6) pits to be closed out shall be filled with clean soil to the surrounding grade and imperviously capped with clay. The site preparation shall proceed in accordance with the equivalent time schedule as proposed in the referenced plan. Construction of New Double-Lined Pits The construction of two (2) of the four (4) new pits 17 through 20, each equipped with two (2) impervious bottom liners, a leachate collection pipe, a leak detection riser pipe and a concrete chute in each corner., and the construction of the leachate collection main and the leachate storage tank shall all be completed within six (6) months from the date of this Certificate. The other two (2) new pits, each equipped in an equivalent fashion, shall be completed within one (1) year from the date of this Certificate. All sludge disposal operation shall be transferred to these new pits immediately upon the completion of construction of the first two of these new pits. Capping of Existing Unlined Pits The six (6) presently open unlined pits numbered 9,. 10, 11, 12, 13, and 14 on the referenced engineering plans shall be filled with clean soil and graded so as to prevent the ponding of water, and shall be sealed with an impervious cap of a minimum of six (6) inches of compacted bentonite clay. The clay caps shall be underlain by a minimum of six (6) inches of compacted soil and overlain by a minimum of twelve (12) inches of loam. The loam shall be re-vegetated by sowing with grass seed during the spring and/or fall in accordance with the recommendations of the county agricultural agent. 5. Surface Water Control

4 Page 4 of 7 Pages - J.T. Baker Chemical Company Sanitary Landfill The grade and thickness of final cover on all surfaces of finished and sealed pits shall be maintained regularly so as to prevent the occurrence of ponding of water. Any off site drainage shall be such as not to cause a silt problem. 6 Excavation Site excavation shall be in accordance with drawing number 2 of the referenced engineering plans, with the maximum depths of excavations to elevation 248 feet in pit 17, 231 feet in pit 18,.233 feet in pit 19, and 231 feet in pit 20. The excavated pit bottoms shall be pitched towards the leachate collection and leak detection systems. 7. Impervious Bottom Liners Two (2) impervious liners shall be installed on the bottoms and side slopes of each of the four-(4) new pits 17, 18, 19, and 20. These liners shall be installed in accordance with the details shown on drawings numbered 2 and 3 of the referenced engineering plans. These liners shall be installed under the supervision of an experienced plastic liner contracting firm and all seams and joints in each pit shall be field inspected and certified by the contractor prior to any sludge disposal in that pit. 8. Leachate Collection The system to collect leachate from the bottoms of each of the four (4) new double-lined pits 17, 18, 19, and 20 and drainage to a storage tank shall be constructed in accordance with the details shown on drawings numbered 2 and 3 of the referenced engineering plans. The leachate storage tank shall be constructed in accordance with the details shown on drawings numbered 4 and 5 of the referenced engineering plans. 9. Leachate Disposal Leachate collecting in the storage tank shall be pumped into tank trucks and transported to the J.T. Baker Chemical Company's wastewater treatment plant in Phillipsburg, as detailed on page 4 of the referenced operating procedures manual. In addition, the liquid level in the leachate tank shall be measured and recorded on each day of operation, and on a monthly basis after the facility terminates. Whenever the liquid level in the tank at the end of the operating day exceeds six thousand (6,000) gallons, then additional tank trucks shall be sent to the facility before the end of the next day to remove the excess leachate in the tank. Leak Detection Monitoring Each of the four-(4) leak detection riser pipes shall be examined monthly for the presence of liquid, and the levels of any liquids found shall be recorded. In the event that liquid is detected in any of these riser pipes, this Administration shall be notified of the discovery within thirty (30) days from the date of detection. Correction of Leaks

5 Page of 7 Pages - J.T. Baker Chemical Company Sanitary Landfill The registrant shall, within thirty (30) days from the notification of such finding, submit for this corrective options outlined on pages 5 and 6 on the referenced operating procedures manual. Such corrective action engineering design shall include complete details and time schedule for the corrective Leachate Records A graph of the amount of leachate versus time for the storage tank shall be maintained on a monthly facility termination, the amount of leachate collected increases substantially, then the bentonite seal on the top of each pit shall be examined and all leaks shall be repaired within ninety (90) days of their initial 10. Dikes impervious bottom liners. These dikes shall be constructed per the referenced engineering plans, and the top and outside dike surfaces shall be either seeded or riprapped, immediately following completion of 11. Fencing referenced engineering plans and operating procedures manual. Installation of this fence shall be completed within six (6) months from the date of this Certificate. Dust Control Dust control shall be effected by the spraying of water or by the spreading equivalent means as approved by this Administration. An adequate water supply and/or fire fighting equipment shall be readily available on site or on call to extinguish any and all fires. Fire fighting procedures shall be posted. Maximum Elevations The maximum elevations above sea level shall be 266 feet in pit 17, 260 feet in pit 18, 255 feet in pit 19, of the referenced engineering plans. The final cover on each pit shall consist of a minimum of two (2) feet of compacted soils, including a lower layer of a minimum of six (6) inches of soil, an intermediate layer of a minimum of six (6) inches of

6 Page 6 of 7 Pages - J.T. Baker Chemical Company Sanitary Landfill compacted to give a maximum permeability of 1 X 10-7 cm/sec. One boring shall be made on the clay layer installed on each pit to confirm that the required thickness has been met, and an undisturbed sample shall be taken from each pit for a permeability test by an independent soil laboratory. The thickness and permeability test results shall be submitted to this Administration. If the test results fail to meet the above-mentioned criteria, then corrective measures shall be taken immediately to achieve compliance with those standards. The boring holes shall be back-filled with compacted clay. The top loam cover shall be graded so as to facilitate drainage therefrom, and shall be re-vegetated by sowing with grass seed during the spring and/or fall in accordance with U.S. Soil Conservation Service specifications or the recommendations of the county agricultural agent. 16. Final Closure Final cover shall be applied, graded, and grass seeded on each of the four new pits within six (6) months after the filling of that pit to the approved final grade. 17. Plans in Office One (1) complete set of the approved engineering plans, operating procedures manual, the records of leachate levels and analyses, and these conditions of registration shall be kept at the J.T. Baker Phillipsburg, New Jersey plant office and shall be available for inspection by Department personnel or its designated representative. 18 Certification of Construction At the end of seven (7) months from the date of this Certificate, a letter shall prepared by the registrant and be submitted to this Administration to certify that the excavation sub-grade preparations, and installations of the 20 mil secondary liners, the 12 inch soil aggregate layers, the 30 mil primary liners, the 8 inch soil aggregate layers, the 6 inch coarse and fine aggregate layers, the leachate collection system, main drain lines and storage tank, and the leak detection collector and riser pipes for two (2) of the four (4) new pits 17, 18, 19, and 20 and the closing and bentonite sealing of existing pits 9, 10, 11, and 12 together with the boring log and permeability result of the bentonite clay layer have all been performed in accordance with the approved engineering design and/or the conditions of this Certificate. At the end of thirteen (13) months from the date of this Certificate a similar letter shall be submitted to this Administration by the registrant to certify that the construction of the other two (2).new pits has been performed in accordance with the approved engineering design and/or the Conditions of this Certificate. At the end of nine (9) months from the date of this Certificate, a letter shall I prepared by the registrant and be submitted to this Administration to certify that the closing and bentonite sealing of existing pits 13 and 14 have been performed in accordance with the approved engineering design and/or the conditions of this Certificate. In addition, at the end of seven (7) months after each termination of one of the new pits 17, 18, 19,.and 20, a letter shall be prepared by the registrant and be submitted to this Administration to certify that the closing and bentonite sealing of that pit has been performed in accordance with the approved engineering design and/or the conditions of this Certificate. 19. Duration of Registration

7 7 of 7 Pages - J.T. Baker Chemical Company Sanitary Landfill proper application at that time, provided that there is still design capacity remaining and that the operation will meet all other Solid Waste Administration requirements at that time. Referenced Engineering Plans and Report The construction and opera 7:26-1 et seq. and with the engineering plans and narrative prepared by Metcalf & Eddy, Inc., specifically: the plans prepared by Clifford W. Bowers, P.E., and revised on April 25, 1978, and the drawing, numbered BY-35, prepared by Kenneth L. Mann, P.E. and dated November 14, 1977; and with these approval conditions. In case of conflict, the conditions of this Certificate shall supercede those of Failure to ' comply with any or all limitations heretofore mentioned will result in the Department seeking relief under N.J.S.A. 13:lE-l et seq., the Solid Waste Management Act. Specifically, failure to so comply -12. This Certificate of Approved Registration and Engineering Design Approval is not valid until the original Waste Administration for final processing. Signed by Frances E. Steele My Commission Expires Aug. 16, 1980 Aug. 15, 1978 Date Applicant Signature Applicant's Name (Printed) Manager, Environmental Protection

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